Keeping up with Java
summary
Overview of concrete changes and migration steps from Java 8 through 12 with demos and gotchas including a two‑module EasyText app that compiles, runs and returns a Flesch‑Kincaid score 83 showing module boundaries, and how missing modules produce a runtime error. Covers Java 9 modules as jar plus module-info with requires/exports enforcement, jlink creating a minimal custom runtime image, JShell REPL, var local inference pitfalls, the new HttpClient in Java 11, and switch expressions as a Java 12 preview.
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chapters (13)
- 0:00Introduction to Java modules
- 2:09Module system basics
- 7:51Module demo with EasyText
- 15:34JDK modularization benefits
- 20:12JLink for custom runtime images
- 23:24Java 8 to 11 migration issues
- 25:27JShell interactive Java
- 30:11Java 9 collection factory methods
- 31:34Local variable type inference with var
- 37:57Java 11 HTTP Client API
- 41:05Java 12 switch expressions
- 42:52Java adoption and LTS options
- 48:04Q&A and closing remarks
